LME49720 Vs LM4562....

Before I got an AP I used a Boonton 1120 -- same story -- the NE5534 in the oscillator couldn't be beat.

I still have an HP 8903a which looks very similar to the Boonton 1120, the oscillator is not the best and the residual distortion of the meter isn't stellar either, I ended up buying a Cordell Distortion Magnifier to extend the measurment range, I just ordered it a couple of days ago. I also have an AP Sys-1 so the whole setup might be redundant.